zynaddsubfx

ZynAddSubFX open source synthesizer
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Controller.C (2319B)

      1 #include "Controller.h"
      2 #include <stdio.h>
      3 #include <stdlib.h>
      4 #include <math.h>
      5 
      6 pthread_mutex_t mutex;
      7 int Pexitprogram;
      8 
      9 Controller::Controller() {
     10     //init
     11     for(int i = 0; i < 6; ++i) {
     12         pars[i].mode      = 1;
     13         pars[i].val1      = 0;
     14         pars[i].val2      = 127;
     15         pars[i].nrpn.cpar = 8;
     16         pars[i].nrpn.fpar = 0;
     17         pars[i].nrpn.cval = 0;
     18     }
     19     pars[0].ctl.par = 71;
     20     pars[1].ctl.par = 74;
     21     pars[2].ctl.par = 10;
     22     pars[3].ctl.par = 11;
     23     pars[4].ctl.par = 1;
     24     pars[5].ctl.par = 75;
     25 
     26     //ALSA init
     27     snd_seq_open(&midi_out, "default", SND_SEQ_OPEN_OUTPUT, 0);
     28 
     29     char portname[50]; sprintf(portname, "Controller");
     30     snd_seq_create_simple_port(
     31         midi_out,
     32         portname,
     33         SND_SEQ_PORT_CAP_READ
     34         | SND_SEQ_PORT_CAP_SUBS_READ,
     35         SND_SEQ_PORT_TYPE_SYNTH);
     36 }
     37 
     38 Controller::~Controller() {
     39     snd_seq_close(midi_out);
     40 }
     41 
     42 void Controller::sendcontroller(int par, unsigned char val) {
     43     snd_seq_event_t midievent;
     44     snd_seq_ev_clear(&midievent);
     45 
     46     snd_seq_ev_set_controller(&midievent, Pchout, par, val);
     47 
     48     snd_seq_ev_set_subs(&midievent);
     49     snd_seq_ev_set_direct(&midievent);
     50     snd_seq_event_output_direct(midi_out, &midievent);
     51 
     52 //    fprintf(stderr,"Controller: %d %d\n",par,val);
     53 }
     54 
     55 void Controller::sendnrpn(int npar, unsigned char val) {
     56 //    fprintf(stderr,"NRPN: %d %d %d %d\n",pars[npar].nrpn.cpar,pars[npar].nrpn.fpar,pars[npar].nrpn.cval,val);
     57 
     58     sendcontroller(0x63, pars[npar].nrpn.cpar);
     59     sendcontroller(0x62, pars[npar].nrpn.fpar);
     60     sendcontroller(0x06, pars[npar].nrpn.cval);
     61     sendcontroller(0x26, val);
     62 //    fprintf(stderr,"------------\n\n");
     63 }
     64 
     65 void Controller::send(int npar, float xval) {
     66     if(pars[npar].mode == 0)
     67         return;
     68     int val;
     69     if(pars[npar].val1 <= pars[npar].val2)
     70         val =
     71             (int) (xval
     72                    * (pars[npar].val2 - pars[npar].val1
     73                       + 1.0) * 0.9999 + pars[npar].val1);
     74     else
     75         val =
     76             (int) (xval
     77                    * (pars[npar].val2 - pars[npar].val1
     78                       - 1.0) * 0.9999 + pars[npar].val1 + 1.0);
     79     switch(pars[npar].mode) {
     80         case 1: sendcontroller(pars[npar].ctl.par, val); break;
     81         //case 2:break;
     82         case 3: sendnrpn(npar, val); break;
     83     }
     84 }